feat: add filter::Context::link function to link two filters together (#196)

issue #195 Co-authored-by: Vincent Jousse <vincent.jousse@luminvent.com>

Author: VincentJousse

src/filter/context/context.rs

@@ -52,6 +52,10 @@ impl Context {
  let _ = option::Settable::set_channel_layout(self, "channel_layouts", value);
  }
  }
+
+ pub fn link(&mut self, srcpad: u32, dst: &mut Self, dstpad: u32) {
+ unsafe { avfilter_link(self.as_mut_ptr(), srcpad, dst.as_mut_ptr(), dstpad) };
+ }
 }
 
 unsafe impl option::Target for Context {